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https://blogs.nasa.gov/spacestation/2019/04/18/nasa-tv-broadcasts-friday-arrival-of-u-s-resupply-ship-to-station/

NASA TV Broadcasts Friday Arrival of U.S. Resupply Ship to Station

Mark Garcia
Posted Apr 18, 2019 at 4:47 pm


Northrop Grumman's Cygnus space freighter with its prominent cymbal-shaped UltraFlex solar arrays is pictured in the grips of the Canadarm2 robotic arm in November of 2018.

A Northrop Grumman cargo ship carrying about 7,600 pounds of science and research investigations, supplies, and hardware is set to arrive to the International Space Station early Friday morning. The uncrewed Cygnus spacecraft launched at 4:46 p.m. EDT Wednesday, April 17 on an Antares rocket from NASA's Wallops Flight Facility in Virginia.

When Cygnus, dubbed the S.S. Roger Chaffee, arrives to the space station on Friday, April 19, Expedition 59 Flight Engineer Anne McClain will use the space station's robotic arm to take hold of the spacecraft at about 5:30 a.m. Fellow crew member David Saint-Jacques of the Canadian Space Agency will assist McClain. NASA astronaut Nick Hague will monitor Cygnus systems during its approach for capture. After Cygnus' capture, ground controllers will command the station's arm to rotate and install it on the bottom of the station's Unity module for a three-month stay.

Live coverage will begin on NASA TV at 4 a.m. and return to the air at 7 a.m. for installation coverage. Watch at www.nasa.gov/live

08:00 и 11:00 UTC

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David Saint-Jacques‏Подлинная учетная запись @Astro_DavidS 17 апр.

Had a rare chance to practise using #Canadarm2 ahead of the upcoming cargo vehicle captures. Proud of Canadian robotics! #DareToExplore

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David Saint-Jacques‏Подлинная учетная запись @Astro_DavidS 17 апр.

Cleaning up the airlock after the spacewalk – our most precious tool, a space cordless drill used to work with bolts.
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Je fais le ménage dans le sas après la sortie dans l'espace... Notre outil le plus précieux : une perceuse sans fil spatiale pour les boulons.




3 ч. назад

#TBT: Nostalgic task of taking apart and resetting my trusted spacesuit, and stowing all the tools we used outside.
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Nostalgie... j'ai défait et remis ma combinaison spatiale à l'ajustement initial, et j'ai rangé tous les outils que nous avons utilisés à l'extérieur.

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https://www.nasa.gov/mission_pages/station/research/news/spx17-research

April 18, 2019

Dragon's 17th Flight Carries Science to the Space Station

Dragon's 17th Flight Carries Science to the Space Station

A SpaceX Dragon cargo spacecraft scheduled to launch in late April takes supplies and a variety of scientific experiments to the International Space Station. Lifted into orbit by a Falcon 9 rocket from Cape Canaveral Air Force Station in Florida, the craft represents the 17th SpaceX Commercial Resupply Services contract mission for NASA.

Read more about some of the scientific investigations traveling to the space station on this launch.

Measuring atmospheric CO2 from space

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The Orbiting Carbon Observatory-3 (OCO-3) examines the complex dynamics of Earth's atmospheric carbon cycle. Installed on the Japanese Experiment Module-Exposed Facility, called JEM-EF, it collects measurements to quantify variations in a specific type of atmospheric carbon dioxide. Having the observatory on the space station enables sampling during all sunlit hours and targeted local mapping of emission hotspots.


NASA's Orbiting Carbon Observatory 3 (OCO-3) and Space Test Program-Houston 6 (STP-H6) shown in the SpaceX Dragon spacecraft at NASA's Kennedy Space Center in Florida in preparation for launch to the space station. Robotically installed on the outside of the space station, OCO-3 measures and maps atmospheric carbon dioxide to provide further understanding of the relationship between carbon and climate.
Credits: NASA

OCO-3's precise measurements will provide scientists with a better understanding of surface carbon dioxide sources and storage sinks on regional scales, as well as the processes controlling their variability from seasonal cycles. Understanding these sources and sinks can help in forecasting increased atmospheric heat retention and reducing its long-term risks. The investigation preserves continuity of previously collected atmospheric records.

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Putting microalgae on the menu

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Current life support systems in space use physicochemical processes, such as steam and chemical reactions, to generate oxygen and water and remove carbon dioxide from the space station. The Photobioreactor investigation demonstrates using biological processes to create a hybrid life support system. The investigation tests the cultivation of microalgae for food and as part of a life support system to generate oxygen and consume carbon dioxide.

On future long-duration missions, this approach could reduce the amount of food, water and other essentials that crews have to bring from Earth. This type of research on the station is critical for NASA to understand and overcome the challenges of long-duration spaceflight, and necessary for a sustainable presence on the Moon and missions deeper into the solar system, including Mars.

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Organs on Chips advance human health research

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Tissue chips, or organs on chips, are small devices that contain human cells in a three-dimensional matrix. Scientists use them to test how those cells respond to stresses, drugs and genetic changes. This launch includes four Tissue Chips in Space investigations:

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• Lung Host Defense in Microgravity uses a lung and bone marrow organ-on-a-chip to compare response to infection in microgravity and on Earth. The investigation expands understanding of the biological basis of immune system suppression in space and provides insight into ways to counter it.
• Cartilage-Bone-Synovium Microphysiological System studies how spaceflight affects musculoskeletal disease and tests potential drugs for preventing progression of Post-traumatic Osteoarthritis, arthritis that occurs after loss of cartilage and bone due to a traumatic joint injury.
• Organs-On-Chips as a Platform for Studying Effects of Microgravity on Human Physiology analyzes the effect of microgravity and other space-related stressors on the brain blood barrier. This may provide insight into the relationship between inflammation and brain function and a better understanding of neurodegenerative diseases such as Alzheimer's and Parkinson's.
• Effects of Microgravity on the Structure and Function of Proximal and Distal Tubule MPS (Kidney Cells) examines how kidney health is affected by microgravity and other factors of space travel, including water conservation and recycling, and altered dietary intake. Knowledge gained can help protect the health of astronauts and contribute to better treatments for kidney related conditions on Earth.
  

An example of a Tissue Chip in Space device. These contain human cells in a three-dimensional matrix used in investigations that test how various types of cells respond to stresses, drugs, and genetic changes.
Credits: NASA Photo/Josh Valcarcel

These investigations are a collaboration between the National Center for Advancing Translational Sciences at the National Institutes for Health and the ISS U.S. National Lab in partnership with NASA

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Multi-use microgravity experiment platform

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Hermes is a reconfigurable on-orbit facility that provides a platform for investigations with applications to asteroids, planetary science, and exploration. These investigations will provide researchers with insight into the formation and behavior of asteroids and comets, impact dynamics, and planetary evolution. The facility is capable of accommodating up to four experiments at a time and can operate for hours, days, or even months. Hermes is equipped with lighting to illuminate experiments as necessary and four sets of cameras to provide imagery or video for experiment monitoring. Depending on a particular investigation, Hermes may contain different mechanical components and sensors to obtain additional data.


The Hermes Facility headed to the International Space Station supports material investigations with applications to asteroids, planetary science, and exploration.
Credits: NASA/Johnson Space Center

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Watching cells make DNA repairs

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Increased exposure to radiation in space can cause damage to deoxyribonucleic acid (DNA)   known as double strand breaks. Cells repair these breaks but such repairs are prone to errors, causing insertions or deletions of DNA bases. Buildup of these errors can have detrimental effects, such as cancer, and affect the long-term health of astronauts.


The miniPCR is used for Genes in Space investigations aboard the International Space Station. Spaceflight causes many changes to the human body, including alterations in DNA and a weakened immune system and this technology enables DNA studies in space that can help safeguard crew health.
Credits: NASA

Genes in Space-6 evaluates the process of DNA repair in the spaceflight environment by causing double strand breaks in the yeast Saccharomyces cerevisiae and assessing the subsequent mutations and repairs while still in space. The Miniature Polymerase Chain Reaction (miniPCR) and the MinION sequencer tools aboard the space station make this assessment possible.

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Melissa Gaskill

International Space Station Program Science Office
Johnson Space Center

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Last Updated: April 18, 2019
Editor: Michael Johnson

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Корабль в зоне AE, 1 км (белая точка справа внизу экрана ближе к центру)

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https://blogs.nasa.gov/spacestation/2019/04/19/nasa-tv-coverage-begins-of-u-s-cygnus-craft-approaching-station/

NASA TV Coverage Begins of U.S. Cygnus Craft Approaching Station

Mark Garcia
Posted Apr 19, 2019 at 4:03 am


Expedition 59 Flight Engineer Anne McClain of NASA uses the robotics workstation inside the U.S. Destiny laboratory module to practice Canadarm2 robotics maneuvers and Cygnus spacecraft capture techniques.

Aboard the International Space Station, Expedition 59 Flight Engineer Anne McClain of NASA will capture the spacecraft assisted by David Saint-Jacques of the Canadian Space Agency, who will monitor Cygnus systems during its approach for capture. They will use the space station's robotic arm to take hold of the Cygnus, dubbed the S.S. Roger Chaffee. After Cygnus' capture, ground controllers will command the station's arm to rotate and install it on the bottom of the station's Unity module.

NASA Television coverage of capture has begun. Watch live online at www.nasa.gov/live

A timeline of remaining Cygnus and space station activities for the earliest capture attempt is below:

[TH]Time (EDT)[/TH][TH]   [/TH][TH]Event[/TH]

4:14 a.m.		Cygnus within 300m of Space Station
4:21 a.m.		250m Hold Point Arrival
4:36 a.m.		250m Hold Point Departure
4:47 a.m.		Cygnus within 100 meters of Space Station
5:00 a.m.		30 meters Hold Point Arrival
5:05 a.m.		Earliest "Go" for Capture
5:19 a.m.		Capture Point Arrival
5:24 a.m.		"Go" or "No-Go" for Capture
5:30 a.m.		Capture

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04/19/2019 11:32 Stephen Clark

The Cygnus spacecraft is currently holding around 250 meters, or 820 feet, beneath the International Space Station. This pause allows mission controllers to evaluate the status of all key systems on both vehicles before clearing Cygnus to approach inside the "keep out sphere," an imaginary bubble stretching 200 meters, or 656 feet, fr om the complex on all sides.

The last major course correction burn, known as ADV3, was completed less than an ago to put Cygnus on track to arrive directly below the space station.

The Cygnus spacecraft is making its automated approach aided by GPS navigation and laser instruments designed to determine the range and closing rate between the cargo ship and the huge 450-ton space station.

The Cygnus first relied on comparing GPS navigation data from its on-board computer and the space station.

After arriving at the hold point about 820 feet directly below the space station, Cygnus will switch to a TriDAR sensor, which uses triangulation and fires light pulses and measures their reflections from the space station to measure the range and closing rate between the two vehicles.

The laser-guided visual navigation system feeds data into the Cygnus guidance computer, telling the spacecraft when and wh ere to fire its rocket jets to maneuver the unmanned freighter to a point 30 feet below the space station.

Once Cygnus arrives at a hold point just below the complex around 5:22 a.m. EDT (0922 GMT), astronaut Anne McClain will take control of the lab's robot arm to reach out and grapple the free-floating Cygnus spacecraft at 5:30 a.m. EDT (0930 GMT).

The robot arm will maneuver the Cygnus spacecraft onto the Unity module's Earth-facing berthing port about two hours later.

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04/19/2019 11:40 Stephen Clark

The Cygnus spacecraft, fitted with a pressurized cargo compartment built by Thales Alenia Space in Italy containing around 3,162 kilograms, or 6,971 pounds, of supplies, is moving toward a hold point 30 meters, or 98 feet, from the space station.


04/19/2019 11:41 Stephen Clark

Range is now 200 meters, or about 656 feet.

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04/19/2019 11:50 Stephen Clark

The Cygnus spacecraft is now about 90 meters, or 295 feet, from the space station.

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